Mayo Clinic-led research supports an optimized diagnostic approach that incorporates clinically relevant autoantibody profiles to screen for and confirm the presence of myasthenia gravis (MG) and Lambert-Eaton syndrome (LES).
Our first-line MG and LES evaluation examines levels of acetylcholine receptor binding antibodies (AChR-Bi). If positive, confirmatory testing measures levels of acetylcholine receptor modulating antibodies (AChR-Mo). In cases where AChR-Bi antibodies are not found, testing automatically reflexes to muscle-specific kinase (MuSK) antibody testing. This test enables the highest testing sensitivity by providing the lowest cut-off values of receptor binding antibodies.
Myasthenia gravis and Lambert-Eaton syndrome Test menu
Mayo Clinic research has advanced the science of testing for MG by demonstrating, through peer-reviewed and validated research, that an algorithmic testing approach involving automatic reflex to confirmatory testing for seropositive patients improves diagnostic accuracy. In addition, Mayo Clinic research has revealed that tests for certain biomarkers traditionally used to inform diagnosis lack utility. As a result, these nonactionable antibodies have been excluded from our assays.
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